편마비 환자의 정상측과 마비측의 비복근 운동점에서의 근육 두께 차이

김동건,도현경,김현동,황지선,정규영,정호중 고신대학교의과대학 2008 고신대학교 의과대학 학술지 Vol.23 No.1

Objective : To investigate any difference of muscle thickness in the motor points of the gastrocnemius between the paretic and non-paretic legs in hemiplegics. Method : Ultrasonography was used to assess in vivo the gastrocnemius muscle thickness at the motor points in the paretic and non-paretic legs of twenty-four patients with stroke. Results : Muscle thickness at the motor points were reduced in the paretic legs compared to the non-paretic legs (p<0.05). There was no correlation between muscle thickness and duration of hemiplegia, site of hemiplegia. However, it did not take regular pattern of the muscular atrophy in the paretic legs. Conclusion : The gastrocnemius muscle of the paretic leg had smaller thickness compared with the non-paretic leg. The present results indicate that paresis in hemiplegics may affect the accuracy of intramuscular injection of botulinum toxin A. Therefore, we recommend ultrasonography for visually controlled, anatomically precise injection of botulinum toxins.

고속방사에 의해 제조된 PEN 필라멘트의 특성 : 방사속도에 따른 영향 Effects of Take-up Velocities

지동선,손준식 단국대학교 2001 산업기술연구 Vol.2 No.-

Polyethylene 2,6-naphthalate(PEN) filament by high-speed melt spinning was prepared at the take-up velocities of 1∼7 ㎞/min. The changes of the structure and physical properties caused by various take-up velocities were studied by measuring density, birefringence, x-ray diffraction, DSC, and tensile behavior. The PEN filament at high take-up velocities were show very different structure formation and properties. The orientation, especially in crystalline phase, was developed with the increase of take-up velocity. The physical properties(i.e. density, crystallinity, birefringence melting temperature, heat of fusion, tensile strength, tensile modulus)of the PEN filaments were increased with increasing of take-up velocities. These increasing tendencies were markedly appeared at the take-up velocities of 4∼7 ㎞/min by conditions due to suddenly orientation of shin molecules. The existence of extended non-crystalline molecules in the PEN filaments was appeared at take-up velocity about 4∼7 ㎞/min. It was found that they formed crystal at take-up velocity 7 ㎞/min, and their crystal

Steam Press에 의한 毛織物의 치수變化에 관한 연구

智東宣 단국대학교 대학원 1987 學術論叢 Vol.11 No.-

As the experimental results of a continuing and repeating steam press by closing and opening press method in woven wool fabrics of Tropical, Twill, Gabardine, and Doeskin, the conclusions were as follows : In sewing process, after we took into consideration enough to the essence of press and the properties of materials, we justified in selecting of sewing machine, needle, hook, bobbin, sewing thread, the other accessaries, and so on. Especially in woven wool fabrics, it is desirable for us to begin sewing after we obtained previously a necessary information from weaving compaines and examined it thoroughly.

실록실화 폴리프로필렌 섬유의 열적 거동 및 인장특성

지동선,윤철수 단국대학교 2001 산업기술연구 Vol.2 No.-

Siloxylated polypropylene fibers using two polymers of polypropylene and aluminosiloxane were prepared by melt blending. The effects of blending ratio on the thermal behaviors and tensile properties of siloxylated polypropylene fibers were study. The thermal behaviors, X-ray diffraction, and tensile properties of siloxylated polypropylene fibers were investigated be DSC, X-ray, and UTM analyses. It was found that the melting temperature of siloxylated polypropylene blend were not changes with increasing the aluminosiloxane contents. But heat of fusion of siloxylated polypropylene blend were decreased with aluminosiloxane contents. In addition, the peak intensity of siloxylated polypropylene blend in X-ray diffraction pattern was decreased with increasing the aluminosiloxane contents. After these blends were prepared as a fiber, ones tensile properties were measured. The tensile strength and the tensile modulus were decreased with increasing the contents of aluminosiloxane in the siloxylated polypropylene fibers. Also, the elongation at break was increased with increasing the contents of aluminosiloxane in the siloxylated polypropylene fibers. From these results, in case of introducing aluminosiloxane to polypropylene, the miscibility of polypropylene was improved.

반응표면분석에 의한 직물의 투습성 평가

智東宣 단국대학교 1992 論文集 Vol.26 No.-

One factor influencing the comfort of fabrics for clothing is their resistance to the passage of water vapor. In this evaluation on the water vapor permeability of woven fabrics by response surface analysis, the water vapor transfer resistance of woven fabrics is a dependent variable, and three parameters of fabrics(i.e. thickness, porosity, and open free area) are simultaneously independent variables. The second order regression model on the water vapor transfer resistance(R_F) can be fitted from the method of least squares by response surface analysis. And the estimated value of water vapor transfer resistance of worsted fabrics made of ring spun yarns was approximately 0.82cm at the stationary point.

황토를 이용한 모직물의 염색에 관한 연구

지동선,김현성 단국대학교 1999 산업기술연구 Vol.1 No.-

The optimum conditions of loess dyeing were investigated to improve the color fastness and antibacteria properties of wool fabric dyed with the loess at various conditions such as loess, H_2SO_4. Na_2SO_4, concentration, time and temperature. With the increase in concentrations of loess and H_2SO_4, the dyeing temperature, and the dyeing time, the K/S values of the samples increased. But with the increase in concentration of Na_2SO_4, used as a retarder, the K/S values of the samples decreased. It was found that the optimum conditions of loess dyeing in order to give the color fastness to dry cleaning were loess 3∼5 % o.w.f., H_2SO_4 2∼3 %(v/v), Na_2SO_4, 5 % o.w.f., dyeing temperature 90℃, and dyeing time over 35 minutes. The results of antibacteria tests suggested that the antibiosis of wool fabric dyed with the loess is better than that of the undyed.

열유도상분리법에 의한 미세다공성 폴리에틸렌 중공사막의 제조에 관한 연구

지동선,공용운 단국대학교 1999 산업기술연구 Vol.1 No.-

The solid-liquid phase separation of the high density polyethylene(HDPE) hollow fiber membrane prepared via thermally induced phase separation process was thermodynamically investigated. As the amount of liquid paraffin(LP) used as a diluent increased, the equilibrium melting temperature given Hoffman-Weeks plots decreased. The value of Flory-Huggins interaction parameter obtained from the melting point depression in the HDPE/LP blends was -0.43. The phase was not separated in the melt state since it had good miscibility. However, the solid-liquid phase separation occurred at lower temperatures. The temperatures of crystallization and phase separation decreased with increase in the cooling rate. As the amount of liquid paraffin and draft ratio increased, the flux of polyethylene hollow fiber membrane increased. It was found that the optimum blend ratio for microporous polyethylene hollow fiber membrane of HDPE/LP blends was determined to be 40/60. The flux of polyethylene glycol solution under the same applied pressure and time was less than that of pure water for HDPE/LP 40/60 and 50/50(wt%).

PECVD로 제작한 수소화된 비정질 탄소(a-C:H) 박막의 화학결합 구조에 관한 연구

노지연,이석호,오동선,박혁렬,김영산 木浦大學校基礎科學硏究所 1997 基礎科學硏究誌 Vol.15 No.-

Hydrogenated amorphous carbon(a-C:H) films were prepared by PECVD(Plasma enhanced-chemical vapor deposition) method. The films were characterized using various spectroscopic measurements such as Raman scattering, FTIR(Fourier transform infrared) absorption spectroscopy. FRIR absorption reflects only the optically active hydrogen in the a-C:H and, using it together with Raman spectroscopy. The spectral analysis indicated that changes in Raman spectroscopy intensity occurring with increasing substrate temperature 50℃~300℃ were determined to be caused by changes in optically resonant components in the films. Furthermore, a significant correlation was the two crystalline forms of carbon-graphite and -diamond consist of sp² and sp³ bonds, respectively. Significant changes in chemical bonding(sp²/sp³) and micro-structure of hydrogenated amorphous carbon thin films occur as the substrate temperature varies from 50 to 300℃ during.

브랜드 인지도와 광고가 콘택트렌즈의 착용감과 가격만족도에 미치는 영향

임동규 ; 신상준 ; 한지선 ; 이익한 ; 김진숙 김천대학교 2016 김천대학교 논문집 Vol.36 No.-

The purpose of this research was to analyze the effects of brand awareness and brand advertising on price satisfaction and comfort in contact lens. We did a survey with 200 university students (85 male, 115 female) who have experience of wearing contact lens from April to May in 2015. The brand awareness of contact lens influences to purchasing intention of contact lens, it effects women more than men. Many respondents(53%) replied that the reliability is the most important elements of the advertising. This survey indicates that there is no statistically significant correlation between the brand awareness and advertisement with price satisfaction in contact lens. Therefore we could confirm they have dissatisfaction for prices of contact lens regardless to brand awareness or advertisement. The brand and advertising dependence group have more comfort of contact lens than non-dependence group when they are long time wear of contact lens. Therefore, there is statistically significant correlation between the brand awareness and advertisement with comfort of contact lens. As a result, brand awareness and reliability of advertising influences to purchasing intention of contact lens. But there is no statistically significant correlation with price satisfaction in contact lens. Whereas, brand awareness and advertisement have a statistically significant correlation with comfort of contact lens.

관개수원에 따른 논에서의 영양물질 배출 특성

황하선,공동수,신동석,전지홍 한국물환경학회 2004 한국물환경학회지 Vol.20 No.6

Field experimental study was performed to examine characteristics of nutrient export from paddy rice fields with irrigation practices. Experimental fields with surface-water and ground-water irrigation were monitored and analyzed during rice culture period. The water balance showed that outflow generally balanced the inflow showing that about half (58∼68%) of total outflow was lost by surface drainage. Water and nutrient export are more in surface-water irrigation paddy than in ground-water irrigation paddy. The reasons might be more irrigation water available and easy to use in surface-water irrigation. If irrigation water reduced, it could result in reduction of nutrient export in paddy rice fields, which can save water and protect water quality. However, deviation from conventional standard practices might affect the rice yield and further investigations are necessary.